THE OGALLALA AQUIFER might be the show-stopper for Keystone XL, according to the Washington Post's article "Keystone XL pipeline may threaten aquifer that irrigates much of the central U.S.", part of their series, "Keystone:Down the Line". There seems to be a clear and present danger, according to Jane Kleeb, who is an activist in Nebraska:
If the pipeline should spring a leak where it touches the aquifer or even above it, Kleeb and other opponents say, oil could quickly seep into and through the porous, sandy soil. The Ogallala, Kleeb said last year in a television interview, is “a very fragile ecosystem, literally made of sand. . . . To have a pipeline crossing that region is just mind-boggling.”
Stevie ain't gonna like this . . .